Brocade Mobility RFS Controller System Reference Guide (Supporting software release 5.5.0.0 and later) - Manual (Page 183)

Brocade Mobility RFS Controller System Reference Guide 171
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15. Define the following IGMP Querier settings:
16. Select the OK button to save the changes and overrides. Select Reset to revert to the last
saved configuration.
Overriding a Profile’s Cisco Discovery Protocol Configuration
Overriding a Profile’s Network Configuration
The Cisco Discovery Protocol (CDP) is a proprietary data link layer network protocol implemented in
Cisco networking equipment and used to share information about network devices.
To override a CDP configuration:
1. Select Devices from the Configuration tab.
The Device Configuration screen displays a list of managed devices or peer controllers, service
platforms or Access Points.
2. Select a target device (by double-clicking it) from amongst those displayed within the Device
Configuration screen.
Devices can also be selected directly from the Device Browser in the lower, left-hand, side of
the UI.
3. Select Profile Overrides from the Device menu to expand it into sub menu options.
4. Select Network to expand its sub menu options.
5. Select Cisco Discovery Protocol.
Enable IGMP Querier Select this option to enable IGMP querier. IGMP snoop querier is used to keep host memberships
alive. It’s primarily used in a network where there’s a multicast streaming server and hosts
subscribed to the server and no IGMP querier present. An IGMP querier sends out periodic IGMP
query packets. Interested hosts reply with an IGMP report packet. IGMP snooping is only conducted
on wireless radios. IGMP multicast packets are flooded on wired ports. IGMP multicast packet are not
flooded on the wired port. IGMP membership is also learnt on it and only if present, then it is
forwarded on that port.
Source IP Address If enabling IGMP querier, set the source IP address used for IGMP snooping over a multicast router.
IGMP Version Use the spinner control to set the IGMP version compatibility to either version 1, 2 or 3. IGMPv1 is
defined by RFC 1112, IGMPv2 is defined by RFC 2236 and IGMPv3 defined by RFC 4604 which
defines both IGMPv3 and MLDv2. IGMPv2 improves over IGMPv1 by adding the ability for a host to
signal desire to leave a multicast group. IGMPv3 improves over IGMPv2 by adding the ability to listen
to multicast traffic originating from a set of source IP addresses exclusively.
Maximum Response
Time Specify the maximum interval (from 1 - 25 seconds) before sending a responding report. When no
reports are received from a radio, radio information is removed from the snooping table. The
controller or service platform only forwards multicast packets to radios present in the snooping table.
For IGMP reports from wired ports, the controller or service platform forwards these reports to the
multicast router ports. The default setting is 1 seconds.
Other Querier Timer
Expiry Specify an interval (from 60 - 300 seconds) used as a timeout interval for other querier resources.